Machine for rubbing stone



UNITE S TES MACHINE FOR, RUBBING STONE.

Specification of Letters Patent No. 9,142, dated July 20, 1852.

.To all whom 'it may concern.'

Be it known that I, PLEASANT E. ROYSE, of New Albany, in the county of Floyd and State of Indiana, have invented certain new and useful Improvements in Machinery for Rubibing and Polishing Marble and o-ther Stone; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specification, in which- Figure l is a top view or plan. Fig. 2 is an elevation looking in direction of the arrow Z Fig. l, the part R being represented in section. Fig. 3 is a plan of the lower machinery taken as indicated by the line C O, Fig. 2

The same letters of reference denote corresponding parts throughout the several iigures.

'Io enable others skilled in the art to make and use my invention I will proceed fully to describe it.

A is the ground Hoor of a shop, or framing connected therewith, B an upper floor; or A and B may represent stages for carrying the combination of mechanical devices forming my invention.

The machinery situated between the floors A and B is similar in appearance to that known by the name of Fletchers patent, but is an improvement thereon in construction and operation, as no rising and falling bed, requiring time and labor to adjust it, is employed and rubbers having a more effective motion are adopted.

a, l), c, may represent slabs of marble or stone being operated on. They are arranged in any suitable number on the floor or framing A, and sand leveled under and between them, they being situated as orin a similar manner to that shown in Fig. 3.

D is a Xed toothed wheel; E the revolving vertical driving shaft having attached to it arms CZ c g, the arm f serving by a continuation attached thereto for yoking cattle to drive the machine, or the shaft E may be operated, through band or gearing, by other power; a square framing, formed by pieces h, 1T, y', Za, is united to the arms CZ, e, f, g, and inclo-ses the shaft E centrally within it.

G Gr are two of the rubbers (four of them being shown in the drawings) they are of marble or stone, as may be, and serve by the friction of their lower faces to rub or polish the slabs a, b, c, on which they rest, being so hung as to insure Contact without rendering necessary (as in Fletchers patented combination) packing up the slabs or bed, the rubbers being made self adjusting by the manner in which they are hung or attached and operated and which is as follows: The rubbers Gr Gr are held in clamps or clasps C C formed of oblong or suitable shaped framings between the sides of which the rubbers are held, the end pieces of either clamp lying over the top of the rubber which end pieces should be firmly secured to the one side of the 'clamp and pass loosely through a mortise in the other for the purpose of packing up the loose side of the clamp against the edge of the rubber and accommodating different sized rubbers, the loose side of the clamp, when set, may be fixed by wedges or screws or pins passing` through or against it and the end pieces; the clamps C, C, thus holding the rubbers revolve together with the arms Z e 7 g to which, on one side, they are linked by rods F F hang ing loosely; the several rubbers, situated between the arms CZ e f g, I design to place or attach at various distances from the shaft E for the purpose of operating on different widths or, numbers of slabs, and, by placing the one rubber at a greater distance from the shaft E than the adjoining or next rubber, the rubbing or polishing action will be improved as the face of the slab will have the rubbing motion on it varied by each rubber in succession, this effect being obtained by the peculiar movement given to the rubber as will be evident from the continued description; the clamps C C, connected to the arms Z e f and revolving with them, have also individual, or separate, motions given them through means of pinions II H, cranks I I, and connecting rods J J, the said pinions, by suitable connections, revolving with the arms CZ c f g and having, in addition, a rotary motion of their own through the fixed wheel D into which they gear; the connecting rods J J are hung loosely, similar to the link rods F F, so as to admit of vertical play in the rubbers which will thereby not only adjust themselves to Various thicknesses of stone being operated on, rendering an adjusting bed unnecessary, but, by the gravity of the rubbers being brought to bear on the face of the marble or stone, the rubbing process will be simply etlicaciously and expeditiously performed, the

action of the rubbers resembling more the hand process of scouring than is the case with other machines as will be evident from the foregoing description of parts and study of the peculiar motion given the rubbers which, not only revolve with the arms CZ e f g, but, through the pinions PI H operating cranks I, I and connecting rods J, J, together with the link rods F F-have a motion in and out from the center shaft E, not in a radial but in a winding, twist-ing or curvilinear direction more in unison,than a straight movement, with that adopted for scouring generally.

S is a tub or vessel for containing sand, it is seated on the arm Z and through apertures in itsbottom (regulated by slide or valve if required) serves to distribute sand, while a water cask T furnishes a supply of water necessary in rubbing or polishing, and thus the time usually consumed in feeding the sand on by hand may be saved.

The revolving shaft E I propose to extend above the floor B, and through a toothed Wheel K to communicate motion to an ordinary rotary rubber Land blocking tables M Mf-a pinion la (gearing into the wheel K) serving to operate the rubber L which turns within a fixed cylinder (having a cross brace) wherein the stones to be rubbed are placed, as represented in Figs. 1 and 2, sand and water being supplied the rotary rubber which by the nature of its surface produces the necessary rub or polish on the stone resting by its own weight thereon. Stones being blocked on the tables M M, are, as at present, operated on by slides N N having iiannel faces coated with marble-putty the slides N N move as indicated by their respec tive'arrows Fig. 1, through means of cradles P P that rock to and fro, rods Z Z and m m,

` the latter rods being linked to an eccentric pin projecting from the face of a disk Q, which is made to revolve by pinion on its shaft gearing into the wheel K. The rotary rubber L also the blocking slides N N may be thrown out of or into gear by simply raising or lowering the pinions which operate them, this `may be done through any suitable contrivance and will serve to reduce the driving power and wear when one or both devices are not required t0 be used, a table R answers to carry the cylinder of the rotary rubber L. The combination of the rotary rubber L, blocking tables M M and rubbers G G, all operating from one main shaft E, serve to make a very compact and lconvenient machine, as one driving power will serve to operate the three, while the machinery on 'the ground floor may be used to rough rub only and the upper rubber and blocking tables for producing a smoother or finishing polish or for operating on small pieces of marble or stone exclusively.

I do not claim the separate employment lof a rotary rubber L and blocking tables M M as such are in Vcommon use, nor do I claim, of itself, giving the rubbers G G a separate motion, in addition to their revolving one, by means of pinions H H gearing into a fixed wheel D and through cranks and connecting rods serving to operate the.

rubbers as such has before been done-but Vhat I do claim as my invention and desire to secure by Letters Patent is- The combination of parts herein specified for rubbing and polishing marble or other necessary to pack up the latter and for thek further advantages specified.

In testimony whereof I have hereunto signed my name before two subscribing witnesses.

PLEASANT E. ROYSE.

Vitnesses SAML. GRUBB,

E. G. HANDY. 

